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Related Concept Videos

Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon towards...
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
Structure and Function of Leukocytes01:21

Structure and Function of Leukocytes

An adult in good health typically has between 4,500 and 11,000 leukocytes, or white blood cells, per microliter of blood, which constitutes about 1% of the total blood volume. Unlike red blood cells, white blood cells contain a nucleus and other cellular organelles but do not have hemoglobin. Most white blood cells reside in connective tissues, particularly in lymphatic organs such as the lymph nodes, with only a small fraction present in circulating blood.
White blood cells protect the body...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Acute Inflammation I: Cellular Phase01:26

Acute Inflammation I: Cellular Phase

The cellular phase of acute inflammation is a tightly orchestrated sequence of events that recruits leukocytes, primarily neutrophils, to sites of tissue injury or infection. Following the initial vascular changes, this phase ensures effective immune cell migration, activation, and function at the affected site to eliminate pathogens and initiate tissue repair.Leukocyte Recruitment CascadeLeukocyte recruitment happens in four steps: margination, adhesion, transmigration, and chemotaxis. Reduced...

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Related Experiment Video

Updated: May 7, 2026

Rapid and Robust Analysis of Cellular and Molecular Polarization Induced by Chemokine Signaling
10:03

Rapid and Robust Analysis of Cellular and Molecular Polarization Induced by Chemokine Signaling

Published on: December 12, 2014

Chemokines: roles in leukocyte development, trafficking, and effector function.

Santa Jeremy Ono1, Takao Nakamura, Dai Miyazaki

  • 1Department of Immunology, Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK.

The Journal of Allergy and Clinical Immunology
|June 6, 2003
PubMed
Summary

Chemokines are proteins crucial for immune cell movement and function. This review explores their roles in immune homeostasis and allergic inflammation, suggesting potential therapeutic targets.

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Rapid and Robust Analysis of Cellular and Molecular Polarization Induced by Chemokine Signaling
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Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Chemokines are a protein superfamily involved in cell recruitment to inflammation sites.
  • They play essential roles in immune homeostasis, including leukocyte maturation, homing, and activation.

Purpose of the Study:

  • To review the multifaceted roles of chemokines in leukocyte development, recruitment, and activation.
  • To examine signal transduction pathways of chemokine receptors.
  • To highlight chemokine involvement in allergic inflammation and potential therapeutic targeting for type I hypersensitivity.

Main Methods:

  • Literature review and analysis of existing research on chemokines and their receptors.
  • Synthesis of information on chemokine function in immune cell dynamics.
  • Exploration of chemokine signaling pathways and their implications in disease.

Main Results:

  • Chemokines are critical regulators of leukocyte trafficking and immune cell function.
  • Chemokine receptor signaling is central to leukocyte activation and migration.
  • Chemokines significantly contribute to the pathogenesis of allergic inflammation.

Conclusions:

  • Chemokines are key players in both normal immune function and inflammatory diseases.
  • Targeting chemokine pathways offers promising therapeutic strategies for allergic conditions like type I hypersensitivity.
  • Further research into chemokine signaling can lead to novel treatments for immune-mediated disorders.